Thanks ed3D, these are all good suggestions! I will be running a raspberry pi as the primary computer system in my printer and it will be the one handling the startup, shutdown and safety devices as well as monitoring the environmental input from the rumba board so it will cut the power via relays to the rumba boards outputs. This should eliminate any delays from the software waiting to completeby panterateama - Safety & Best Practices
Well the machine is over built lol, it will be able to do cnc machining as well as 3d printing so it is going to be a heavy duty machine. Thanks for the info. Assuming I use a rumba or ramps 1.4 with drv8825 stepper drivers, I should just be able to tune the trim pot to get the current tunes in yes?by panterateama - Mechanics
Hey guys, as the title implies I'm wondering if you can drive a nema 08 (mini stepper) the same way as a nema 17 using a ramps based board like ramps1. 4 or rumba. I'm not going to use it as my main drive motors, but as an accessory to do auto bed leveling instead of a servo. The servo method is too cumbersome for what I want to do in a tight space and actuators are super expensive. But if I useby panterateama - Mechanics
Nice that might work... I'm looking at using the rumba board and it has some spare ends top ports I can use... I'm still thinking of running it through a relay as well to kill power only to the head (heater/laser etc) and trigger this too with a normally closed script should work. Thanksby panterateama - Safety & Best Practices
It was just an example Dancer. I'm looking for help making something safer. I have been in the 3d printing/reprap industry for over 6 years... I know the good bad and ugly of printer design... I just want to know if anyone has any suggestions for a door interlock system. I don't know why I'm getting trolling instead of helpful suggestions.by panterateama - Safety & Best Practices
For god sakes guys I realize that we have Darwin award nominees everywhere but the fact remains that they don't build cnc machines without interlocks and safety mechanisms anymore because enough people got hurt. I'm just trying to build something safer than it currently is, which let's face it, are not very safe at all. If I want to send one of these into a classroom environment for example, I doby panterateama - Safety & Best Practices
I realize this guys, but I still think I would like to add safety features that will at least help prevent such things... A seat belt doesn't prevent 100% deaths in car accidents but if it helps in 99% of cases, shouldn't we have them?by panterateama - Safety & Best Practices
This all makes sense... Sadly It looks like a relay system would be the most practical in my case. It seems like multiple power supplies would make for much more reliability issues, not to mention needing a much larger containment box. Thanks guys. I'll let you know what I figure outby panterateama - Safety & Best Practices
But as a multi axis controller and on/off for a single speed mill it ticks all of the boxes except a hardware safety shutdown. If someone made a good iteration of the ramps base (like Rumba for example) with multi extruder, fans, mosfets etc but also include a hardware shutdown jumper, the world would take notice...by panterateama - Safety & Best Practices
I still can't belive that no one has thought of this in terms or ramps or derivative hardware...by panterateama - Safety & Best Practices
What I'm thinking of doing is creating a relay board. If the emergency stop or either of the doors are triggered, it would cut the power to the spindle/laser emediately by cutting the 12/24v line to them. But it will also send a signal to the controller to run m600/m125 so both will take place. The most u portland thing is to kill the laser and the spinning bit 100% dead immediately. The movementby panterateama - Safety & Best Practices
I did think of this too, but I'm wondering if m600 or even triggering m125 to park it would also shut off the heaters/milling head (the milling hear speed would be controlled by the same circuit as the heater on the second extruder controller)by panterateama - Safety & Best Practices
Hello all, I'm working on a printer enclosure that will be tied into the electronics of the printer. I am using RAMPS 1.4 driven by an RPI. I want to make a switch on the door that will stop the machine from moving unless the door is closed as a safety feature. I plan on using a cnc milling head at some point and for safety, I don't want someone to be able to open the door and stick their fingeby panterateama - Safety & Best Practices
Thank you both for the replies. The main reasons I am going with Rumba or Magatronics is the pre-existing firmware options and mods made by the community. I plan on using coreXY for the mechanics and Marlin has it all built in. Also, I want a PWM option for a laser engraving head that will go along with the printer. I have a bunch of other ideas I want to pack it all in and make a full 3d objecby panterateama - RAMPS Electronics
Hello Vreihen, Thanks for the reply and yes, i saw the mods made on the german forums. Not interested in doing that myself lol. I did find a microSD card to regular SD card extension cable so I could in fact use the micro SD card from the main board, avoiding the issues with the LCD mounted SD card issues. I wish there were more vendors of the Megatronics 3.0 board as it has a separate externaby panterateama - RAMPS Electronics
Hello DC42, Thanks for the reply, I honestly didn't know that SD card cables like this existed. I'll take a look into it a bit futher, but there are a few on ebay that look very promising. As for the duet boards, I like the idea of 32 bit and ARM since I can probably do a lot more with it, but I can't seem to find any solid documentation anywhere. The idea of a touch screen would be great but iby panterateama - RAMPS Electronics
Hello everyone, I'm currently working on a design for my own 3d printer. I want to include an LCD and SD card reader for autonomous printing. Here is my problem: I am designing a custom build acrylic enclosure and I want the LCD in on spot below the viewing window, but I want the SD card reader coming out of that same front wall, not out the side. The 2004 and Full Graphic LCD controllers boby panterateama - RAMPS Electronics
Lol thanks to you both! I will use this for reference ideasby panterateama - General Mendel Topics
Hey bobby, thanks for the advice! I think I'm gonna stick to the mendel90 base model with the longer bars and maybe go with the 10mm for the x bars that support the extruder. I looked at the max but it was a lot more to source the parts in my area so prices became high fast. I hope I can show off the final product after tax season. That is going to be our cash injection for the project. A sideby panterateama - General Mendel Topics
You were right, I am Interested lol. Thanks! I also found out that ekerstech (spelling?) is right outside of town for me so that helps with a local parts supplier. So my current dilemma: no jumbo beds to be found so far in Canada... Is there any way or has anyone wired up 2 mk2 hotbeds? If so, what amperage should I look for on a power supply? I'm probably going for a good pc power supply. Ifby panterateama - General Mendel Topics
Thanks for the links. I'm sorry if I'm a noob but what do I need to open the scad files and what should be the first few items I should look at on the github link? I hate to sound like a ninny but I wish thinks were just simple PDF docs lolby panterateama - General Mendel Topics
Does anyone have any links for the mendel90 or prusa i3? They both seem very similar and able to support the larger bed but neither one has a good guide on the wiki... I still haven't figured out the github thing... Thanks all!by panterateama - General Mendel Topics
Niagara region... Don't go to Toronto too often though but I assume that will be my best option Thanks for the advice. Since this will be my first build I was hoping for the best documentation... It seems the 90 is a little sparseby panterateama - General Mendel Topics
If I went with the prusa 2, could I also just extend the X? Making it wider? I was thinking of getting a kit without bars and just get a set of bars longer for the extruder track and support bars... Is this also ok? I think I could get the prusa much easier and cheaper here in Canada than the mendel90... Thanks for the help guys... I like to make an informed decision before I buy something this pby panterateama - General Mendel Topics
Awesome! Good to hear they have them ore built to 400x200... That mean less tricky wiring lol. I will have to look online to source one though... I'm in Canada so it's hard to find locally. Any suggestions on the prusa, Mendel90 or A2Aprinting.com sells one called a "mixG1" that looks like a Mendel90 variant. Any ideas which would work best for this longer bed? Also will I need a bigger power sby panterateama - General Mendel Topics
Hey everyone, a friend and I are planning on putting together a prusa Mendel II. The problem is that one of the objects we are planing to print OFTEN is about 8.5" long (about 220mm) and 2-3" wide. Most models of printers I have seen max out at about 7.5" (190mm). I want to know if I could scale up 1 axis? I am planning on using a heated bed so I don't want to scale up x and y or I will need 4 beby panterateama - General Mendel Topics